If you re-built your carbs and removed the throttle plates, check to see
that with the idle screws all the way out, the throttle plates are seated
correctly in the carb. The plates have a large screw hole that allows them
to move around somewhat on the shaft. If you had the idle screws in at the
time you put the plates on, it is possible for the plates to be mis-aligned
and hit the carb wall (bore) before they fully close. Check your linkage to
make sure nothing is binding, holding the carbs open.
Sergio
1967 Sunbeam Alpine
Series V 'AJNT 86'
still working on it but getting closer!
----- Original Message -----
From: Bubba Albano <aalbano(at)home.com>
To: <alpines(at)autox.team.net>
Sent: Sunday, May 16, 1999 4:08 PM
Subject: MTBE gasoline additive causing high idle???
> The cause of my rough idle/run was caused by a torn carb diaphram.I
> replaced them both and it runs much smoother. Still I can't get it to
> idle under 1400 RPM. Thats with the idle screws backed off. A friend of
> mine swears it's because we use MTBE as an additive in our gas in
> Connecticut. Has anyone else heard of MTBE causing high idles??? I think
> this additive is mixed in with all brands in CT.
>
> Anthony
>
>
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